National Tsunami No Threat Bulletin
National Tsunami No Threat Bulletin : Notification that there is no tsunami threat to the Australian mainland or islands after an undersea earthquake has occurred. The Bulletin is issued after the JATWC has detected a large undersea earthquake and based upon an evaluation of the magnitude and location of this earthquake it has been determined that there is no threat of dangerous tsunami to the Australian mainland, islands or territories. Bulletins are issued by the BoM to all media and emergency services.
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